1. a decorative pin or brooch worn on the chest or breast of a garment
Usage: often ornamental; may be made of metal, jewels, or other materials

Examples

• She fastened a diamond breastpin to her dress for the formal dinner.
• The antique breastpin was passed down through three generations of the family.
• He wore a gold breastpin shaped like a rose on his lapel.
• The museum displayed a collection of Victorian breastpins in the jewelry exhibit.
• She chose a simple pearl breastpin to complement her elegant outfit.